Brick-machine



2 Sheets-Sheet 1.

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(No Model.) 2 Sheets-Sheet 2 D. H. RICE. BRICK MAGHINE.

No. 500,510. Patented June 27, 1893.

Wimaaae, mwew xm UNITED STATES PATENT OFFICE.

DAVID HALL RICE, OF BRDOKLINE, ASSIGNOR TO THE SOMERSET & JOHN- SONBURGMANUFACTURING COMPANY, OF SOMERSET, MASSACHUSETTS.

BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 500,510, dated June 27,1893.

Application filed September 11, 1891. Serial No. 405,373. (No model.)

To all whom it may concern:

Be it known that I, DAVID HALL Bron, of Brookline, in the county ofNorfolk and State of Massachusetts, have invented a new and usefulImprovement in Brick-Machines, of which the following is aspecification.

My improvement relates to machines for pressing or molding clay into theform of bricks, and it consists in certain new and useful improvementsinthe construction and combination of the several parts of the samesubstantially as hereinafter described and claimed.

In the drawings: Figure 1 is alongitudinal vertical section through amachine for pressing clay into the form of bricks, having my improvementattached thereto. Fig. 2 is a top plan view, partly in section, of theplaten and feed hopper of the machine with my improvement attachedthereto, the upper parts of the machine being removed to show theinvention more clearly. Fig. 3 is a longitudinal vertical sectionthrough the scraper and feed hopper, shown in Fig. 2, enlarged. Fig.4 isa top plan view of a portion of the same. Fig. 5 is a front elevation ofa portion of the scraper detached from its box.

This invention relates to machines for scraping or cleaning the upperplaten or plunger of the machine, when it becomes fouled from the clayadhering to it, and it is represented in Fig. 1 as applied to the brickpressing machine shown and described in the patent to William Johnson,No. 415,343, granted November 19, 1889. Fig. 1 represents alongitudinalvertical section through the brick machine substantially the same asFig. l of the said Johnson atent, except that the feed hopper is movedslightly outward from the platen, to allow of the attachment of myimprovement, and the general construction and operation of the machinewill be readily understood by reference to the said Johnson patent takenin connection with this drawing.

D is the upper platen or plunger.

H is the cam wheel on one side of the machine, which raises the plunger.

g, g, are the cams which lift the plunger under its ends.

lis the double pressing cam to compress the bricks into the mold bed.

o is the hopper to receive the clay.

o is the reciprocating charger, which conveys the clay from the hopperto the molds in the machine bed by the agency of the lever, q, asdescribed in the Johnson patent.

d is the face plate of the upper plunger, which forms the upper side ofthe brick;

b is the lower plunger, which is raised at the proper time, as describedin the Johnson machine, to eject the pressed brick from the mold.

B is the mold frame set in the bed, 7c, of the machine and b, b, [Fig 2]are the molds, of the shape of the bricks, the machine being constructedto press four at once as described in the Johnson patent.

c, c, are the side frame plates of the machine, which support theWorking parts.

All the other parts of the machine are substantially as described insaid Johnson patent and need not be further described here to be readilyunderstood.

On the front side of the charger, 0', is attached the box, 1, of thesame length as the charger transversely of the machine, and forming anextension forward of it, the box being opened at the top. The front sideof this box serves to push the brick away when the charger is movedforward over the mold. In this box is mounted the bar, 2, which extendsthrough it transversely of the machine bed and works up and down inslots, cut in the ends of the box vertically to receive it. bar has itsends projecting beyond the box, so as to engage under the bars 3, 3, and4, 4:, which are attached to the inner faces of the side plates of themachine on each side of the platen, and form guide pieces to control themovements of the bar. Attached to the bar are the scraper blades 5, 5,which are so arranged as to have their upper edges traverse in a planeslightly below that of the upper platen, when the latter is raised andthe bar is traversing under the guide pieces 3, 4,which it does by themovement of the charger to and fro. The bar 2 is held up by one ,or moresprings 6, which press it upward against the guide pieces. The scraperblades are attached to the bar by arms,which leave spaces between thebar and the blades for the escape of clay downward into the box 1, ifany drops behind This the blades. guide'strips 3, 4,*are in suchrelation to it that as the leading scraper blade, 5, passes under theplaten the bar is released from its guide pieces and the full force ofthe spring, 6, is exerted to press the scraper blade against the lowersurface of theplaten, and after the lea'd-f ing scraper blade'haspassedbeyond theplaten the guide pieces on the opposite side again passover the ends of the bar and control it.

The ends of the guide pieces are rounded slightly to facilitate thiseffect. On the return.-

movement of the charger the other scraper,

blade, 5,becomes theleading one and the'gui'de" pieces release thebar,-so as to allow-it to."

When the platen is raisedthev scrapers thus keep the bottom face of thej'platen clean and avoid all wnecessity of stopping the machine to cleanit off by hand.

What I claim as new and of my invention is 1. In a machine for pressingbricks from soft'clay, the combination ofthe reciprocating charger,0',ithez1nold,the upper platen face,

(1, and one or more scraper blades 5, 5, of unyelding material mountedupon yielding supports arranged to traverse with the charger and toclean the lower face of the platen with a yielding pressure against itas they move past it, substantially as described.

.2. The combination of the mold, the upper platen, the reciprocatingcharger, 0', the box, 1, attached thereto,lthe bar,.2,,provided withoneor morescraper-bladeathe spring, Gyand the guide ,pieces 3, 4,substantially as described.

DA'VID HADL RICE.

Witnesses:

.C. J. TOLAND, N. P. OCKINGTON.

